+static void mostek_get_rtc_time(struct rtc_time *rtc_tm)
+{
+ void __iomem *regs = mstk48t02_regs;
+ u8 tmp;
+
+ spin_lock_irq(&mostek_lock);
+
+ tmp = mostek_read(regs + MOSTEK_CREG);
+ tmp |= MSTK_CREG_READ;
+ mostek_write(regs + MOSTEK_CREG, tmp);
+
+ rtc_tm->tm_sec = MSTK_REG_SEC(regs);
+ rtc_tm->tm_min = MSTK_REG_MIN(regs);
+ rtc_tm->tm_hour = MSTK_REG_HOUR(regs);
+ rtc_tm->tm_mday = MSTK_REG_DOM(regs);
+ rtc_tm->tm_mon = MSTK_REG_MONTH(regs);
+ rtc_tm->tm_year = MSTK_CVT_YEAR( MSTK_REG_YEAR(regs) );
+ rtc_tm->tm_wday = MSTK_REG_DOW(regs);
+
+ tmp = mostek_read(regs + MOSTEK_CREG);
+ tmp &= ~MSTK_CREG_READ;
+ mostek_write(regs + MOSTEK_CREG, tmp);
+
+ spin_unlock_irq(&mostek_lock);
+
+ rtc_tm->tm_mon--;
+ rtc_tm->tm_wday--;
+ rtc_tm->tm_year -= 1900;
+}
+
+static int mostek_set_rtc_time(struct rtc_time *rtc_tm)
+{
+ unsigned char mon, day, hrs, min, sec, wday;
+ void __iomem *regs = mstk48t02_regs;
+ unsigned int yrs;
+ u8 tmp;
+
+ yrs = rtc_tm->tm_year + 1900;
+ mon = rtc_tm->tm_mon + 1;
+ day = rtc_tm->tm_mday;
+ wday = rtc_tm->tm_wday + 1;
+ hrs = rtc_tm->tm_hour;
+ min = rtc_tm->tm_min;
+ sec = rtc_tm->tm_sec;
+
+ spin_lock_irq(&mostek_lock);
+
+ tmp = mostek_read(regs + MOSTEK_CREG);
+ tmp |= MSTK_CREG_WRITE;
+ mostek_write(regs + MOSTEK_CREG, tmp);
+
+ MSTK_SET_REG_SEC(regs, sec);
+ MSTK_SET_REG_MIN(regs, min);
+ MSTK_SET_REG_HOUR(regs, hrs);
+ MSTK_SET_REG_DOW(regs, wday);
+ MSTK_SET_REG_DOM(regs, day);
+ MSTK_SET_REG_MONTH(regs, mon);
+ MSTK_SET_REG_YEAR(regs, yrs - MSTK_YEAR_ZERO);
+
+ tmp = mostek_read(regs + MOSTEK_CREG);
+ tmp &= ~MSTK_CREG_WRITE;
+ mostek_write(regs + MOSTEK_CREG, tmp);
+
+ spin_unlock_irq(&mostek_lock);
+
+ return 0;
+}
+